﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Imageo.bintje;
using log4net;
using System.IO;

namespace Imageo.ui
{
    public class Thumbnail
    {
        public Thumbnail(string id, byte[] data)
        {
            this.ID = id;
            this.Data = data;
        }

        private string id;
        public string ID
        {
            get { return this.id;       }
            set { this.id = value;      }
        }

        private byte[] thumbnail_data;
        public byte[] Data
        {
            get {   return this.thumbnail_data;     }
            set {   this.thumbnail_data = value;    }
        }
    }

    public partial class FileUpload2 : System.Web.UI.Page
    {
        private static readonly ILog log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        protected void Page_Load(object sender, EventArgs e)
        {
//            System.Drawing.Image thumbnail_image = null;
//            System.Drawing.Image original_image = null;
//            System.Drawing.Bitmap final_image = null;
//            System.Drawing.Graphics graphic = null;
//            MemoryStream ms = null;

            try
            {
                HttpPostedFile tmpUploadedFile = Request.Files["Filedata"];
                if (tmpUploadedFile!=null)
                {
                    if (tmpUploadedFile.ContentLength > 0)
                    {
                        string baseLocation = Server.MapPath("~/Upload/");
                        //                    string originalFilename = fupPicture.PostedFile.FileName;
                        //                    string fileName = Guid.NewGuid().ToString() + System.IO.Path.GetExtension(originalFilename);
                        string fileName = Guid.NewGuid().ToString() + System.IO.Path.GetExtension(tmpUploadedFile.FileName);
                        tmpUploadedFile.SaveAs(baseLocation + fileName);
                        string fileurl = Page.ResolveUrl("~/Upload/" + fileName);
                        Response.Write(fileName);
                    }
                    else
                    {
                        Response.StatusCode = 500;
                        Response.Write("An error occured");
                        Response.End();
                    }
                }
                /*
                // Retrieve the uploaded image
                original_image = System.Drawing.Image.FromStream(tmpUploadedFile.InputStream);

                // Calculate the new width and height
                int width = original_image.Width;
                int height = original_image.Height;
                int target_width = 100;
                int target_height = 100;
                int new_width, new_height;

                float target_ratio = (float)target_width / (float)target_height;
                float image_ratio = (float)width / (float)height;

                if (target_ratio > image_ratio)
                {
                    new_height = target_height;
                    new_width = (int)Math.Floor(image_ratio * (float)target_height);
                }
                else
                {
                    new_height = (int)Math.Floor((float)target_width / image_ratio);
                    new_width = target_width;
                }

                new_width = new_width > target_width ? target_width : new_width;
                new_height = new_height > target_height ? target_height : new_height;


                // Create the thumbnail

                // Old way
                //thumbnail_image = original_image.GetThumbnailImage(new_width, new_height, null, System.IntPtr.Zero);
                // We don't have to create a Thumbnail since the DrawImage method will resize, but the GetThumbnailImage looks better
                // I've read about a problem with GetThumbnailImage. If a jpeg has an embedded thumbnail it will use and resize it which
                //  can result in a tiny 40x40 thumbnail being stretch up to our target size


                final_image = new System.Drawing.Bitmap(target_width, target_height);
                graphic = System.Drawing.Graphics.FromImage(final_image);
                graphic.FillRectangle(new System.Drawing.SolidBrush(System.Drawing.Color.Black), new System.Drawing.Rectangle(0, 0, target_width, target_height));
                int paste_x = (target_width - new_width) / 2;
                int paste_y = (target_height - new_height) / 2;
                graphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                //graphic.DrawImage(thumbnail_image, paste_x, paste_y, new_width, new_height);
                graphic.DrawImage(original_image, paste_x, paste_y, new_width, new_height);

                // Store the thumbnail in the session (Note: this is bad, it will take a lot of memory, but this is just a demo)
                ms = new MemoryStream();
                final_image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

                // Store the data in my custom Thumbnail object
                string thumbnail_id = DateTime.Now.ToString("yyyyMMddHHmmssfff");
                Thumbnail thumb = new Thumbnail(thumbnail_id, ms.GetBuffer());

                // Put it all in the Session (initialize the session if necessary)			
                List<Thumbnail> thumbnails = Session["file_info"] as List<Thumbnail>;
                if (thumbnails == null)
                {
                    thumbnails = new List<Thumbnail>();
                    Session["file_info"] = thumbnails;
                }
                thumbnails.Add(thumb);

                Response.StatusCode = 200;
                Response.Write(thumbnail_id);
                 */
            }
            catch
            {
                // If any kind of error occurs return a 500 Internal Server error
                Response.StatusCode = 500;
                Response.Write("An error occured");
                Response.End();
            }
            finally
            {
                // Clean up
//                if (final_image != null) final_image.Dispose();
//                if (graphic != null) graphic.Dispose();
//                if (original_image != null) original_image.Dispose();
//                if (thumbnail_image != null) thumbnail_image.Dispose();
//                if (ms != null) ms.Close();
                Response.End();
            }
        }
    }
}
